users/simon/modules/default.nix

@@ -2,6 +2,7 @@
   imports = [
     ./alacritty.nix
     ./anki
+    ./email.nix
     ./games.nix
     ./ghci.nix
     ./git.nix

users/simon/modules/email.nix

@@ -0,0 +1,215 @@
+{ config, lib, pkgs, ... }:
+let
+  virtualMailboxes = {
+    #"One Month" = "date:30days..today";
+    "FabLab" = "body:fablab";
+    "Git" = "from:{.*@github.com or .*@gitlab.com or no-reply+gitea@sbruder.de}'";
+  };
+
+  mkVirtualMailbox = name: searchTerm: ''
+    virtual-mailboxes "${name}" "notmuch://?query=${searchTerm}"
+  '';
+
+  mutt-solarized-dark = pkgs.fetchurl {
+    url = "https://raw.githubusercontent.com/altercation/mutt-colors-solarized/b1520c6bf1ab49538439514c9393ff69df8591b4/mutt-colors-solarized-dark-16.muttrc";
+    sha256 = "0lji8lds9xqj3j5qpn5554rk8gqx72mc6dc57j3j3kb20xvnq5cx";
+
+    meta.license = lib.licenses.mit;
+  };
+in
+{
+  accounts.email = {
+    maildirBasePath = "${config.xdg.dataHome}/mail";
+
+    accounts = {
+      personal = rec {
+        primary = true;
+
+        realName = "Simon Bruder";
+        address = "simon@sbruder.de";
+        aliases = [ ]; # FIXME!?
+
+        userName = address;
+        passwordCommand = "pass sbruder.de/account | head -n 1";
+
+        imap = {
+          host = "home.sbruder.de";
+          tls.useStartTls = true;
+        };
+
+        smtp = {
+          host = "home.sbruder.de";
+          tls.useStartTls = true;
+        };
+
+        gpg = {
+          key = config.programs.gpg.settings.default-key;
+          signByDefault = true;
+          encryptByDefault = true;
+        };
+
+        msmtp.enable = true;
+        mbsync = {
+          enable = true;
+          #flatten = ".";
+          create = "both";
+          expunge = "both";
+        };
+        neomutt.enable = true;
+        notmuch.enable = true;
+      };
+    };
+  };
+
+  # I am not using the home-manger neomutt module, since it includes many
+  # opinionated, not-overridable defaults that I do not want
+  home.packages = with pkgs; [ neomutt ];
+  xdg.configFile."neomutt/neomuttrc".text =
+    let
+      # adapted from home-manager
+      stringifyValue = value:
+        if lib.isBool value
+        then (if value then "yes" else "no")
+        else "'${toString value}'";
+      stringifySetOption = option: value:
+        if value == null
+        then "unset ${option}"
+        else "set ${option}=${stringifyValue value}";
+      stringifyOptions = options: lib.concatStringsSep
+        "\n"
+        (lib.mapAttrsToList stringifySetOption options);
+
+      stringifyBinds = binds: lib.concatMapStringsSep
+        "\n"
+        (bind:
+          let map' =
+            if (lib.isList bind.map)
+            then (lib.concatStringsSep "," bind.map)
+            else bind.map;
+          in
+          ''bind ${map'} ${bind.key} "${bind.action}"'')
+        binds;
+
+      stringifySources = files: lib.concatMapStringsSep
+        "\n"
+        (file: "source ${file}")
+        files;
+
+      neomuttAccounts = lib.filter (a: a.neomutt.enable) (lib.attrValues config.accounts.email.accounts);
+
+      settings = {
+        # FIXME: comment all non-obvious
+        header_cache = "${config.xdg.cacheHome}/neomutt/headers/";
+        message_cachedir = "${config.xdg.cacheHome}/neomutt/messages/";
+
+        # General
+        implicit_autoview = true; # automatically view with program from mailcap
+        delete = true; # do not ask before deleting
+        mail_check_stats = true;
+
+        # Sidebar
+        sidebar_visible = true;
+        sidebar_folder_indent = true;
+        sidebar_format = "%D%?F? [%F]?%* %?N?%N/?%S";
+        sidebar_short_path = true;
+        sidebar_width = 22;
+        sidebar_delim_chars = "/";
+
+        # Editor
+        edit_headers = true;
+        reverse_name = true;
+        include = true;
+
+        # GPG
+        crypt_use_gpgme = true;
+        crypt_autosign = true;
+        pgp_use_gpg_agent = true;
+        mbox_type = "Maildir";
+        sort = "threads";
+
+        sendmail = "msmtpq --read-envelope-from --read-recipients";
+
+        # Defaults for all accounts
+        folder = config.accounts.email.maildirBasePath;
+        spoolfile = "notmuch://?query=tag:inbox";
+        #from = config.accounts.email.accounts.personal.address;
+        #postponed = "+Drafts";
+        #realname = "Simon Bruder";
+        #record = "+Sent";
+        #trash = "+Trash";
+
+        signature = pkgs.writeText "signature" ''
+          Simon Bruder
+
+          🔑 (GPG): 47E7 559E 037A 3565 2DBB  F8AA 8D3C 82F9 F309 F8EC
+          📧 (E-Mail): simon@sbruder.de
+          📱 (mobile): +49 152 56561414
+        '';
+
+        # notmuch
+        nm_default_uri = "notmuch:///home/simon/.local/share/mail";
+
+        mailcap_path = pkgs.writeText "mutt-mailcap" ''
+          text/html; ${config.xdg.mimeApps.defaultApplications."text/html"} %s
+          text/html; ${pkgs.w3m}/bin/w3m -I %{charset} -T text/html -dump; copiousoutput;
+          application/pdf; zathura %s
+          image/*; mpv %s
+        '';
+
+        pgp_default_key = config.programs.gpg.settings.default-key;
+
+        nm_query_type = "threads";
+      };
+
+      binds = [
+        { map = "index"; key = "\\\\"; action = "vfolder-from-query"; }
+        { map = [ "index" "pager" ]; key = "J"; action = "sidebar-next"; }
+        { map = [ "index" "pager" ]; key = "K"; action = "sidebar-prev"; }
+        { map = [ "index" "pager" ]; key = "S"; action = "sidebar-open"; }
+      ];
+
+      sources = [
+        mutt-solarized-dark
+      ];
+    in
+    ''
+      alternative_order text/enriched text/plain text
+
+      ${stringifyBinds binds}
+
+      # Macros
+      #{macroSection}
+      #"source ${pkgs.neomutt}/share/doc/neomutt/vim-keys/vim-keys.rc"
+
+      ${stringifyOptions settings}
+
+      ${stringifySources sources}
+
+      ${mkVirtualMailbox "Inbox" "tag:inbox"}
+      ${lib.concatStringsSep
+        "\n"
+        (lib.mapAttrsToList mkVirtualMailbox virtualMailboxes)}
+      #mailboxes ="==================="
+    '' + lib.concatMapStringsSep "\n"
+      (account: with account; ''
+        # Account ${name}
+        # FIXME
+        named-mailboxes "== ${name} ==" +${name}/${folders.inbox}
+        mailboxes =${name}/${folders.inbox}
+        mailboxes =${name}/${folders.sent}
+        mailboxes =${name}/${folders.drafts}
+        mailboxes =${name}/${folders.trash}
+      '')
+      neomuttAccounts;
+
+  programs.mbsync.enable = true;
+  programs.msmtp.enable = true;
+  programs.notmuch = {
+    enable = true;
+    hooks = {
+      preNew = ''
+        mbsync --all
+      '';
+    };
+  };
+}